热电池DEB粉中钙锂含量的测定

Measurement of calcium lithium contemt in DEB powder for thermal batteries

主要简述运用一氧化二氮-乙炔火焰原子吸收光谱法进行热电池DEB粉中钙锂含量的测定。介绍了钙锂最佳测定条件及呈良好线性范围的浓度。同时对样品消化处理条件及在测定中样品的干扰因素进行了综合考虑。该方法具有很好的灵敏度和重现性,同时具有方法步骤简单,操作容易掌握等特点。对样品钙锂含量的测定,其相对标准偏差均小于1.0%(n=6);标准加入回收率均在97.0%～102.0%(n=6)范围内。

The application of nitrous oxide-ethane flame atomic absorption spectrophotometer to measure the content of calcium-lithium in positive electrode powder of thermal batteries is studied. This paper introduces the optimum measuring conditions for calcium-lithium ,and potency in which a fine liner range presents,and makes a synthetic consideration to interference factors. The method has the advantages of high sensitivity,and this method is proved to be simple,easy and good in selectivity and reappearance.And it has short analyzing cycle and less interference . The relative standard deviations are all less than 1.0% in six sample measurement, and the standard adding recovery is the range of 97.0%～102.0%, the practice shows that the method is fully suited to measure the content of calcium and lithium in positive electrode powder for thermal batteries. The proposed method was proved to be a useful instrument analytical technique in nitrous oxide ethane flame absorbing spectral method.